US3349914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic filter assembly
Assignee: Marvel Engineering Co
•
Filing: 1965-03-04
•
Granted: 1967-10-31
•
Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Walter J Kudlaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:47
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A FILTER ASSEMBLY INCLUDING AN INLET MANIFOLD, AND OUTLET MANIFOLD, A PLURALITY OF FILTER STRUCTURES BETWEEN SAID MANIFOLDS, TIE RODS EXTENDING BETWEENS SAID MANIFOLDS TO CLAMP SAID STRUCTURES THEREBETWEEN AND A DIRECTOR VALVE POSITIONED IN EACH OF SAID MANIFOLDS TO DIRECT FLUID THROUGH ONE OF SAID STRUCTURES, A BY-PASS VALVE IN ONE OF SAID STRUCTURES AND A RELEASABLE RETAINING CONNECTION BETWEEN SAID BY-PASS VALVE AND SAID DIRECTOR VALVE, SAID DIRECTOR VALVE BEING HELD BY SAID BY-PASS VALVE IN A FIRST POSITION TO COMMUNICATE SAID INLET AND OUTLET MANIFOLDS WITH SAID ONE OF SAID STRUCTURES, AND YIELDING MEANS CONNECTED TO SAID DIRECTOR VALVE AND URGING SAID DIRECTOR VALVE TOWARDS A SECOND POSITION TO COMMUNICATE SAID INLET AND OUTLET MANIFOLDS WITH ANOTHER OF SAID STRUCTURES.
Claim 2
Dependent Claim
123 words
A FILTER ASSEMBLY INCLUDING AN INLET MANIFOLD, AND OUTLET MANIFOLD, A PLURALITY OF FILTER STRUCTURES BETWEEN SAID MANIFOLDS, TIE RODS EXTENDING BETWEENS SAID MANIFOLDS TO CLAMP SAID STRUCTURES THEREBETWEEN AND A DIRECTOR VALVE POSITIONED IN EACH OF SAID MANIFOLDS TO DIRECT FLUID THROUGH ONE OF SAID STRUCTURES, A BY-PASS VALVE IN ONE OF SAID STRUCTURES AND A RELEASABLE RETAINING CONNECTION BETWEEN SAID BY-PASS VALVE AND SAID DIRECTOR VALVE, SAID DIRECTOR VALVE BEING HELD BY SAID BY-PASS VALVE IN A FIRST POSITION TO COMMUNICATE SAID INLET AND OUTLET MANIFOLDS WITH SAID ONE OF SAID STRUCTURES, AND YIELDING MEANS CONNECTED TO SAID DIRECTOR VALVE AND URGING SAID DIRECTOR VALVE TOWARDS A SECOND POSITION TO COMMUNICATE SAID INLET AND OUTLET MANIFOLDS WITH ANOTHER OF SAID STRUCTURES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |